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RR Donnelley and Sons Co

RR Donnell

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US5149960A	Method of converting scanner signals into colorimetric sign…	Expired / Lapsed	1991-07-03	1992-09-22	32	Details
US4763207A	Digital method and system for reproducing analog data	Expired / Lapsed	1986-12-12	1988-08-09	88	Details
US4477833A	Method of color conversion with improved interpolation	Expired / Lapsed	1983-04-25	1984-10-16	16	Details
US1804392A	Method of binding books	Expired / Lapsed	1928-11-26	1931-05-12	0	Details
US1738180A	Signature-gathering machine	Expired / Lapsed	1928-08-01	1929-12-03	0	Details